The most perfect story one could possibly tell through the medium of video games. Undertale didn't just blow up because of dumb kids, although that was a factor, it blew up because it tells you a beautiful, engaging and complex story through the eyes of a child, and does so while just so happening to have a fucking impeccable soundtrack, super unique mechanics, kick-ass boss fights and perhaps the most down-right lovable and memorable set of characters ever placed into a piece of fiction.